Conditions at Artiglieria in September
September: The Autumn Stirs
September marks the first real shift back toward surf. Average swell height is still only 1.3ft (0.4m), but the period nudges up to 4.7s and the first autumn lows start to push into the western Mediterranean. Swell direction remains favourable, led by W (29.4%) and WSW (18.4%), with SSW (14.6%) also contributing; total favourable quadrant energy is over 73%. Offshore wind frequency improves to 8%, and the wind rose still has a summer feel - NW and WNW are common - but morning NNO/NO windows become more noticeable. Water temperature is still warm at 23.8°C, air averages 21.0°C, and precipitation jumps to 2.29 mm/day as frontal systems begin to return. Late in the month, a solid 3-5ft (0.9-1.5m) clean swell is a realistic reward.
Average Spot conditions at Artiglieria in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Artiglieria during September. Based on historical data, there is a % probability of groundswell occurring this month. The chart below provides a detailed breakdown of the average wave height distribution, offering deep insights into the swell quality and surf potential you can expect at Artiglieria for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Artiglieria for September. Our analysis shows that favorable offshore or side-shore winds coincide with surfable swell approximately % of the time. The accompanying graph illustrates the average size distribution of waves during these optimal wind windows at Artiglieria.